John was the son of Jean Baptiste Becquet and Julie Lefebre. He married Aglae Forestier, daughter of Jean Baptiste Joseph Forestier and Euphrasie Hedurge Blasart, 8 May 1886 in Givenchy En Gohella, France.

After John and Aglae were married, they worked in a "Millinery Shop" that belonged to Aglae's parents in France. After a fire destroyed the shop in 1889, they emigrated with her parents, to this country. They settled in Morris, Grundy County, Illinois. John received his naturalization on 29 October 1894 at Grundy County, Illinois. Because of John's failing health due to working in the coal mines there, they moved on to Colorado Springs, Colorado for a higher climate. In 1906 John and Aglae moved to Garden City, Finney County, Kansas.

John worked for the Garden City Company as a "grounds landscape" gardener and caretaker and retired in 1928.

Preceding John in death was his wife, Aglae who died 13 Nov 1916. Surviving were three sons, John Baptiste Becquet, Jr., Norbert Becquet, & Louis Becquet.

A funeral was held for John on 2 September 1940 at the St. Mary's Catholic Church in Garden City, Kansas. Burial was on 3 Sep 1940 at the Evergreen Cemetery in Colorado Springs.